Angle resolved photoemission spectrocopy study on EuCd<sub>2</sub>As<sub>2</sub>
ORAL
Abstract
Recently, DFT calculations on EuCd2As2 in a FM ordered state with Eu moments alligned along the c-axis revealed a single pair of Weyl points. However, previous experimental studies on EuCd2As2 show that the magnetism is an A-type AFM with TN ~ 9.5 K. Here, by discovering and taking advantage of EuCd2As2 chemical tunability, we report successful growths of single crystals of EuCd2As2 with two different magnetic ground states: FM-EuCd2As2 and AFM-EuCd2As2. Angle resolved photoemission spectrocopy shows an anomalous suppression of scattering in ferromagnetic Weyl semimetal candidate EuCd2As2. Unexpectedly, scattering rate is suppressed only in one of the bands over limited energy range that is controlled by presence of another, completely filled band. Such selectivity is highly unusual and can have potential impact on spin transport.
*This work was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering. The research was formed at the Ames Laboratory. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. NHJ, BK, LLW. were supported by the Center for Advancement of Topological Semimetals, an Energy Frontier Research Center.
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Presenters
Na Hyun Jo
Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Authors
Na Hyun Jo
Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Yun Wu
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Iowa State University/Ames Laboratory
Lin-Lin Wang
Ames Lab
Ames Laboratory
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Kyungchan Lee
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Iowa State University/Ames Laboratory
Brinda Kuthanazhi
Ames Laboratory, Iowa State University
Iowa State University
Department of Physics & Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Iowa State University/Ames Laboratory
Benjamin Schrunk
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Iowa State University/Ames Laboratory
Sergey L. Bud'ko
Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames
Ames Laboratory, Iowa State University
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Paul C Canfield
Iowa State University
Ames Laboratory and Iowa State University
Ames Lab
Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
Ames laboratory, Ames, IA
Ames Laboratory, Iowa State University
Department of Physics & Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Iowa State University and Ames Laboratory
Iowa State University, Ames Laboratory
Department of Physics and Astronomy, Iowa State University
Division of Materials Sciences & Engineering, Ames Lab and Iowa State University
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
Iowa State University/Ames Laboratory
Adam Kaminski
Physics and Astronomy, Iowa State University
Ames Laboratory, Iowa State University
Department of Physics and Astronomy, Iowa State University/Ames Laboratory
Department of Physics and Astronomy, Iowa State University
Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy
